420-440W All Black/N Type Bifacial Double-glass Solar Panel Module  DAS-DH108NA 420W-440W Cells Type 182x91mm No. of Cells 144 (6x24)  Panel Efficiency: 21.80% Panel Dimenstion (LxWxT) 1722x1134x30mm  Weight 20.5kg Packing 36pcs/pallet,936pcs/40HQ